| 1 | /* |
| 2 | * Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved. |
| 3 | * Copyright (c) 2004 Infinicon Corporation. All rights reserved. |
| 4 | * Copyright (c) 2004 Intel Corporation. All rights reserved. |
| 5 | * Copyright (c) 2004 Topspin Corporation. All rights reserved. |
| 6 | * Copyright (c) 2004 Voltaire Corporation. All rights reserved. |
| 7 | * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. |
| 8 | * Copyright (c) 2005, 2006 Cisco Systems. All rights reserved. |
| 9 | * |
| 10 | * This software is available to you under a choice of one of two |
| 11 | * licenses. You may choose to be licensed under the terms of the GNU |
| 12 | * General Public License (GPL) Version 2, available from the file |
| 13 | * COPYING in the main directory of this source tree, or the |
| 14 | * OpenIB.org BSD license below: |
| 15 | * |
| 16 | * Redistribution and use in source and binary forms, with or |
| 17 | * without modification, are permitted provided that the following |
| 18 | * conditions are met: |
| 19 | * |
| 20 | * - Redistributions of source code must retain the above |
| 21 | * copyright notice, this list of conditions and the following |
| 22 | * disclaimer. |
| 23 | * |
| 24 | * - Redistributions in binary form must reproduce the above |
| 25 | * copyright notice, this list of conditions and the following |
| 26 | * disclaimer in the documentation and/or other materials |
| 27 | * provided with the distribution. |
| 28 | * |
| 29 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 30 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 31 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 32 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| 33 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 34 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 35 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 36 | * SOFTWARE. |
| 37 | */ |
| 38 | |
| 39 | #include <linux/errno.h> |
| 40 | #include <linux/err.h> |
| 41 | #include <linux/export.h> |
| 42 | #include <linux/string.h> |
| 43 | #include <linux/slab.h> |
| 44 | |
| 45 | #include <rdma/ib_verbs.h> |
| 46 | #include <rdma/ib_cache.h> |
| 47 | #include <rdma/ib_addr.h> |
| 48 | |
| 49 | #include "core_priv.h" |
| 50 | |
| 51 | static const char * const ib_events[] = { |
| 52 | [IB_EVENT_CQ_ERR] = "CQ error", |
| 53 | [IB_EVENT_QP_FATAL] = "QP fatal error", |
| 54 | [IB_EVENT_QP_REQ_ERR] = "QP request error", |
| 55 | [IB_EVENT_QP_ACCESS_ERR] = "QP access error", |
| 56 | [IB_EVENT_COMM_EST] = "communication established", |
| 57 | [IB_EVENT_SQ_DRAINED] = "send queue drained", |
| 58 | [IB_EVENT_PATH_MIG] = "path migration successful", |
| 59 | [IB_EVENT_PATH_MIG_ERR] = "path migration error", |
| 60 | [IB_EVENT_DEVICE_FATAL] = "device fatal error", |
| 61 | [IB_EVENT_PORT_ACTIVE] = "port active", |
| 62 | [IB_EVENT_PORT_ERR] = "port error", |
| 63 | [IB_EVENT_LID_CHANGE] = "LID change", |
| 64 | [IB_EVENT_PKEY_CHANGE] = "P_key change", |
| 65 | [IB_EVENT_SM_CHANGE] = "SM change", |
| 66 | [IB_EVENT_SRQ_ERR] = "SRQ error", |
| 67 | [IB_EVENT_SRQ_LIMIT_REACHED] = "SRQ limit reached", |
| 68 | [IB_EVENT_QP_LAST_WQE_REACHED] = "last WQE reached", |
| 69 | [IB_EVENT_CLIENT_REREGISTER] = "client reregister", |
| 70 | [IB_EVENT_GID_CHANGE] = "GID changed", |
| 71 | }; |
| 72 | |
| 73 | const char *ib_event_msg(enum ib_event_type event) |
| 74 | { |
| 75 | size_t index = event; |
| 76 | |
| 77 | return (index < ARRAY_SIZE(ib_events) && ib_events[index]) ? |
| 78 | ib_events[index] : "unrecognized event"; |
| 79 | } |
| 80 | EXPORT_SYMBOL(ib_event_msg); |
| 81 | |
| 82 | static const char * const wc_statuses[] = { |
| 83 | [IB_WC_SUCCESS] = "success", |
| 84 | [IB_WC_LOC_LEN_ERR] = "local length error", |
| 85 | [IB_WC_LOC_QP_OP_ERR] = "local QP operation error", |
| 86 | [IB_WC_LOC_EEC_OP_ERR] = "local EE context operation error", |
| 87 | [IB_WC_LOC_PROT_ERR] = "local protection error", |
| 88 | [IB_WC_WR_FLUSH_ERR] = "WR flushed", |
| 89 | [IB_WC_MW_BIND_ERR] = "memory management operation error", |
| 90 | [IB_WC_BAD_RESP_ERR] = "bad response error", |
| 91 | [IB_WC_LOC_ACCESS_ERR] = "local access error", |
| 92 | [IB_WC_REM_INV_REQ_ERR] = "invalid request error", |
| 93 | [IB_WC_REM_ACCESS_ERR] = "remote access error", |
| 94 | [IB_WC_REM_OP_ERR] = "remote operation error", |
| 95 | [IB_WC_RETRY_EXC_ERR] = "transport retry counter exceeded", |
| 96 | [IB_WC_RNR_RETRY_EXC_ERR] = "RNR retry counter exceeded", |
| 97 | [IB_WC_LOC_RDD_VIOL_ERR] = "local RDD violation error", |
| 98 | [IB_WC_REM_INV_RD_REQ_ERR] = "remote invalid RD request", |
| 99 | [IB_WC_REM_ABORT_ERR] = "operation aborted", |
| 100 | [IB_WC_INV_EECN_ERR] = "invalid EE context number", |
| 101 | [IB_WC_INV_EEC_STATE_ERR] = "invalid EE context state", |
| 102 | [IB_WC_FATAL_ERR] = "fatal error", |
| 103 | [IB_WC_RESP_TIMEOUT_ERR] = "response timeout error", |
| 104 | [IB_WC_GENERAL_ERR] = "general error", |
| 105 | }; |
| 106 | |
| 107 | const char *ib_wc_status_msg(enum ib_wc_status status) |
| 108 | { |
| 109 | size_t index = status; |
| 110 | |
| 111 | return (index < ARRAY_SIZE(wc_statuses) && wc_statuses[index]) ? |
| 112 | wc_statuses[index] : "unrecognized status"; |
| 113 | } |
| 114 | EXPORT_SYMBOL(ib_wc_status_msg); |
| 115 | |
| 116 | __attribute_const__ int ib_rate_to_mult(enum ib_rate rate) |
| 117 | { |
| 118 | switch (rate) { |
| 119 | case IB_RATE_2_5_GBPS: return 1; |
| 120 | case IB_RATE_5_GBPS: return 2; |
| 121 | case IB_RATE_10_GBPS: return 4; |
| 122 | case IB_RATE_20_GBPS: return 8; |
| 123 | case IB_RATE_30_GBPS: return 12; |
| 124 | case IB_RATE_40_GBPS: return 16; |
| 125 | case IB_RATE_60_GBPS: return 24; |
| 126 | case IB_RATE_80_GBPS: return 32; |
| 127 | case IB_RATE_120_GBPS: return 48; |
| 128 | default: return -1; |
| 129 | } |
| 130 | } |
| 131 | EXPORT_SYMBOL(ib_rate_to_mult); |
| 132 | |
| 133 | __attribute_const__ enum ib_rate mult_to_ib_rate(int mult) |
| 134 | { |
| 135 | switch (mult) { |
| 136 | case 1: return IB_RATE_2_5_GBPS; |
| 137 | case 2: return IB_RATE_5_GBPS; |
| 138 | case 4: return IB_RATE_10_GBPS; |
| 139 | case 8: return IB_RATE_20_GBPS; |
| 140 | case 12: return IB_RATE_30_GBPS; |
| 141 | case 16: return IB_RATE_40_GBPS; |
| 142 | case 24: return IB_RATE_60_GBPS; |
| 143 | case 32: return IB_RATE_80_GBPS; |
| 144 | case 48: return IB_RATE_120_GBPS; |
| 145 | default: return IB_RATE_PORT_CURRENT; |
| 146 | } |
| 147 | } |
| 148 | EXPORT_SYMBOL(mult_to_ib_rate); |
| 149 | |
| 150 | __attribute_const__ int ib_rate_to_mbps(enum ib_rate rate) |
| 151 | { |
| 152 | switch (rate) { |
| 153 | case IB_RATE_2_5_GBPS: return 2500; |
| 154 | case IB_RATE_5_GBPS: return 5000; |
| 155 | case IB_RATE_10_GBPS: return 10000; |
| 156 | case IB_RATE_20_GBPS: return 20000; |
| 157 | case IB_RATE_30_GBPS: return 30000; |
| 158 | case IB_RATE_40_GBPS: return 40000; |
| 159 | case IB_RATE_60_GBPS: return 60000; |
| 160 | case IB_RATE_80_GBPS: return 80000; |
| 161 | case IB_RATE_120_GBPS: return 120000; |
| 162 | case IB_RATE_14_GBPS: return 14062; |
| 163 | case IB_RATE_56_GBPS: return 56250; |
| 164 | case IB_RATE_112_GBPS: return 112500; |
| 165 | case IB_RATE_168_GBPS: return 168750; |
| 166 | case IB_RATE_25_GBPS: return 25781; |
| 167 | case IB_RATE_100_GBPS: return 103125; |
| 168 | case IB_RATE_200_GBPS: return 206250; |
| 169 | case IB_RATE_300_GBPS: return 309375; |
| 170 | default: return -1; |
| 171 | } |
| 172 | } |
| 173 | EXPORT_SYMBOL(ib_rate_to_mbps); |
| 174 | |
| 175 | __attribute_const__ enum rdma_transport_type |
| 176 | rdma_node_get_transport(enum rdma_node_type node_type) |
| 177 | { |
| 178 | switch (node_type) { |
| 179 | case RDMA_NODE_IB_CA: |
| 180 | case RDMA_NODE_IB_SWITCH: |
| 181 | case RDMA_NODE_IB_ROUTER: |
| 182 | return RDMA_TRANSPORT_IB; |
| 183 | case RDMA_NODE_RNIC: |
| 184 | return RDMA_TRANSPORT_IWARP; |
| 185 | case RDMA_NODE_USNIC: |
| 186 | return RDMA_TRANSPORT_USNIC; |
| 187 | case RDMA_NODE_USNIC_UDP: |
| 188 | return RDMA_TRANSPORT_USNIC_UDP; |
| 189 | default: |
| 190 | BUG(); |
| 191 | return 0; |
| 192 | } |
| 193 | } |
| 194 | EXPORT_SYMBOL(rdma_node_get_transport); |
| 195 | |
| 196 | enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device, u8 port_num) |
| 197 | { |
| 198 | if (device->get_link_layer) |
| 199 | return device->get_link_layer(device, port_num); |
| 200 | |
| 201 | switch (rdma_node_get_transport(device->node_type)) { |
| 202 | case RDMA_TRANSPORT_IB: |
| 203 | return IB_LINK_LAYER_INFINIBAND; |
| 204 | case RDMA_TRANSPORT_IWARP: |
| 205 | case RDMA_TRANSPORT_USNIC: |
| 206 | case RDMA_TRANSPORT_USNIC_UDP: |
| 207 | return IB_LINK_LAYER_ETHERNET; |
| 208 | default: |
| 209 | return IB_LINK_LAYER_UNSPECIFIED; |
| 210 | } |
| 211 | } |
| 212 | EXPORT_SYMBOL(rdma_port_get_link_layer); |
| 213 | |
| 214 | /* Protection domains */ |
| 215 | |
| 216 | struct ib_pd *ib_alloc_pd(struct ib_device *device) |
| 217 | { |
| 218 | struct ib_pd *pd; |
| 219 | |
| 220 | pd = device->alloc_pd(device, NULL, NULL); |
| 221 | |
| 222 | if (!IS_ERR(pd)) { |
| 223 | pd->device = device; |
| 224 | pd->uobject = NULL; |
| 225 | atomic_set(&pd->usecnt, 0); |
| 226 | } |
| 227 | |
| 228 | return pd; |
| 229 | } |
| 230 | EXPORT_SYMBOL(ib_alloc_pd); |
| 231 | |
| 232 | int ib_dealloc_pd(struct ib_pd *pd) |
| 233 | { |
| 234 | if (atomic_read(&pd->usecnt)) |
| 235 | return -EBUSY; |
| 236 | |
| 237 | return pd->device->dealloc_pd(pd); |
| 238 | } |
| 239 | EXPORT_SYMBOL(ib_dealloc_pd); |
| 240 | |
| 241 | /* Address handles */ |
| 242 | |
| 243 | struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr) |
| 244 | { |
| 245 | struct ib_ah *ah; |
| 246 | |
| 247 | ah = pd->device->create_ah(pd, ah_attr); |
| 248 | |
| 249 | if (!IS_ERR(ah)) { |
| 250 | ah->device = pd->device; |
| 251 | ah->pd = pd; |
| 252 | ah->uobject = NULL; |
| 253 | atomic_inc(&pd->usecnt); |
| 254 | } |
| 255 | |
| 256 | return ah; |
| 257 | } |
| 258 | EXPORT_SYMBOL(ib_create_ah); |
| 259 | |
| 260 | int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, struct ib_wc *wc, |
| 261 | struct ib_grh *grh, struct ib_ah_attr *ah_attr) |
| 262 | { |
| 263 | u32 flow_class; |
| 264 | u16 gid_index; |
| 265 | int ret; |
| 266 | |
| 267 | memset(ah_attr, 0, sizeof *ah_attr); |
| 268 | if (rdma_cap_eth_ah(device, port_num)) { |
| 269 | if (!(wc->wc_flags & IB_WC_GRH)) |
| 270 | return -EPROTOTYPE; |
| 271 | |
| 272 | if (wc->wc_flags & IB_WC_WITH_SMAC && |
| 273 | wc->wc_flags & IB_WC_WITH_VLAN) { |
| 274 | memcpy(ah_attr->dmac, wc->smac, ETH_ALEN); |
| 275 | ah_attr->vlan_id = wc->vlan_id; |
| 276 | } else { |
| 277 | ret = rdma_addr_find_dmac_by_grh(&grh->dgid, &grh->sgid, |
| 278 | ah_attr->dmac, &ah_attr->vlan_id); |
| 279 | if (ret) |
| 280 | return ret; |
| 281 | } |
| 282 | } else { |
| 283 | ah_attr->vlan_id = 0xffff; |
| 284 | } |
| 285 | |
| 286 | ah_attr->dlid = wc->slid; |
| 287 | ah_attr->sl = wc->sl; |
| 288 | ah_attr->src_path_bits = wc->dlid_path_bits; |
| 289 | ah_attr->port_num = port_num; |
| 290 | |
| 291 | if (wc->wc_flags & IB_WC_GRH) { |
| 292 | ah_attr->ah_flags = IB_AH_GRH; |
| 293 | ah_attr->grh.dgid = grh->sgid; |
| 294 | |
| 295 | ret = ib_find_cached_gid(device, &grh->dgid, &port_num, |
| 296 | &gid_index); |
| 297 | if (ret) |
| 298 | return ret; |
| 299 | |
| 300 | ah_attr->grh.sgid_index = (u8) gid_index; |
| 301 | flow_class = be32_to_cpu(grh->version_tclass_flow); |
| 302 | ah_attr->grh.flow_label = flow_class & 0xFFFFF; |
| 303 | ah_attr->grh.hop_limit = 0xFF; |
| 304 | ah_attr->grh.traffic_class = (flow_class >> 20) & 0xFF; |
| 305 | } |
| 306 | return 0; |
| 307 | } |
| 308 | EXPORT_SYMBOL(ib_init_ah_from_wc); |
| 309 | |
| 310 | struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc, |
| 311 | struct ib_grh *grh, u8 port_num) |
| 312 | { |
| 313 | struct ib_ah_attr ah_attr; |
| 314 | int ret; |
| 315 | |
| 316 | ret = ib_init_ah_from_wc(pd->device, port_num, wc, grh, &ah_attr); |
| 317 | if (ret) |
| 318 | return ERR_PTR(ret); |
| 319 | |
| 320 | return ib_create_ah(pd, &ah_attr); |
| 321 | } |
| 322 | EXPORT_SYMBOL(ib_create_ah_from_wc); |
| 323 | |
| 324 | int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr) |
| 325 | { |
| 326 | return ah->device->modify_ah ? |
| 327 | ah->device->modify_ah(ah, ah_attr) : |
| 328 | -ENOSYS; |
| 329 | } |
| 330 | EXPORT_SYMBOL(ib_modify_ah); |
| 331 | |
| 332 | int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr) |
| 333 | { |
| 334 | return ah->device->query_ah ? |
| 335 | ah->device->query_ah(ah, ah_attr) : |
| 336 | -ENOSYS; |
| 337 | } |
| 338 | EXPORT_SYMBOL(ib_query_ah); |
| 339 | |
| 340 | int ib_destroy_ah(struct ib_ah *ah) |
| 341 | { |
| 342 | struct ib_pd *pd; |
| 343 | int ret; |
| 344 | |
| 345 | pd = ah->pd; |
| 346 | ret = ah->device->destroy_ah(ah); |
| 347 | if (!ret) |
| 348 | atomic_dec(&pd->usecnt); |
| 349 | |
| 350 | return ret; |
| 351 | } |
| 352 | EXPORT_SYMBOL(ib_destroy_ah); |
| 353 | |
| 354 | /* Shared receive queues */ |
| 355 | |
| 356 | struct ib_srq *ib_create_srq(struct ib_pd *pd, |
| 357 | struct ib_srq_init_attr *srq_init_attr) |
| 358 | { |
| 359 | struct ib_srq *srq; |
| 360 | |
| 361 | if (!pd->device->create_srq) |
| 362 | return ERR_PTR(-ENOSYS); |
| 363 | |
| 364 | srq = pd->device->create_srq(pd, srq_init_attr, NULL); |
| 365 | |
| 366 | if (!IS_ERR(srq)) { |
| 367 | srq->device = pd->device; |
| 368 | srq->pd = pd; |
| 369 | srq->uobject = NULL; |
| 370 | srq->event_handler = srq_init_attr->event_handler; |
| 371 | srq->srq_context = srq_init_attr->srq_context; |
| 372 | srq->srq_type = srq_init_attr->srq_type; |
| 373 | if (srq->srq_type == IB_SRQT_XRC) { |
| 374 | srq->ext.xrc.xrcd = srq_init_attr->ext.xrc.xrcd; |
| 375 | srq->ext.xrc.cq = srq_init_attr->ext.xrc.cq; |
| 376 | atomic_inc(&srq->ext.xrc.xrcd->usecnt); |
| 377 | atomic_inc(&srq->ext.xrc.cq->usecnt); |
| 378 | } |
| 379 | atomic_inc(&pd->usecnt); |
| 380 | atomic_set(&srq->usecnt, 0); |
| 381 | } |
| 382 | |
| 383 | return srq; |
| 384 | } |
| 385 | EXPORT_SYMBOL(ib_create_srq); |
| 386 | |
| 387 | int ib_modify_srq(struct ib_srq *srq, |
| 388 | struct ib_srq_attr *srq_attr, |
| 389 | enum ib_srq_attr_mask srq_attr_mask) |
| 390 | { |
| 391 | return srq->device->modify_srq ? |
| 392 | srq->device->modify_srq(srq, srq_attr, srq_attr_mask, NULL) : |
| 393 | -ENOSYS; |
| 394 | } |
| 395 | EXPORT_SYMBOL(ib_modify_srq); |
| 396 | |
| 397 | int ib_query_srq(struct ib_srq *srq, |
| 398 | struct ib_srq_attr *srq_attr) |
| 399 | { |
| 400 | return srq->device->query_srq ? |
| 401 | srq->device->query_srq(srq, srq_attr) : -ENOSYS; |
| 402 | } |
| 403 | EXPORT_SYMBOL(ib_query_srq); |
| 404 | |
| 405 | int ib_destroy_srq(struct ib_srq *srq) |
| 406 | { |
| 407 | struct ib_pd *pd; |
| 408 | enum ib_srq_type srq_type; |
| 409 | struct ib_xrcd *uninitialized_var(xrcd); |
| 410 | struct ib_cq *uninitialized_var(cq); |
| 411 | int ret; |
| 412 | |
| 413 | if (atomic_read(&srq->usecnt)) |
| 414 | return -EBUSY; |
| 415 | |
| 416 | pd = srq->pd; |
| 417 | srq_type = srq->srq_type; |
| 418 | if (srq_type == IB_SRQT_XRC) { |
| 419 | xrcd = srq->ext.xrc.xrcd; |
| 420 | cq = srq->ext.xrc.cq; |
| 421 | } |
| 422 | |
| 423 | ret = srq->device->destroy_srq(srq); |
| 424 | if (!ret) { |
| 425 | atomic_dec(&pd->usecnt); |
| 426 | if (srq_type == IB_SRQT_XRC) { |
| 427 | atomic_dec(&xrcd->usecnt); |
| 428 | atomic_dec(&cq->usecnt); |
| 429 | } |
| 430 | } |
| 431 | |
| 432 | return ret; |
| 433 | } |
| 434 | EXPORT_SYMBOL(ib_destroy_srq); |
| 435 | |
| 436 | /* Queue pairs */ |
| 437 | |
| 438 | static void __ib_shared_qp_event_handler(struct ib_event *event, void *context) |
| 439 | { |
| 440 | struct ib_qp *qp = context; |
| 441 | unsigned long flags; |
| 442 | |
| 443 | spin_lock_irqsave(&qp->device->event_handler_lock, flags); |
| 444 | list_for_each_entry(event->element.qp, &qp->open_list, open_list) |
| 445 | if (event->element.qp->event_handler) |
| 446 | event->element.qp->event_handler(event, event->element.qp->qp_context); |
| 447 | spin_unlock_irqrestore(&qp->device->event_handler_lock, flags); |
| 448 | } |
| 449 | |
| 450 | static void __ib_insert_xrcd_qp(struct ib_xrcd *xrcd, struct ib_qp *qp) |
| 451 | { |
| 452 | mutex_lock(&xrcd->tgt_qp_mutex); |
| 453 | list_add(&qp->xrcd_list, &xrcd->tgt_qp_list); |
| 454 | mutex_unlock(&xrcd->tgt_qp_mutex); |
| 455 | } |
| 456 | |
| 457 | static struct ib_qp *__ib_open_qp(struct ib_qp *real_qp, |
| 458 | void (*event_handler)(struct ib_event *, void *), |
| 459 | void *qp_context) |
| 460 | { |
| 461 | struct ib_qp *qp; |
| 462 | unsigned long flags; |
| 463 | |
| 464 | qp = kzalloc(sizeof *qp, GFP_KERNEL); |
| 465 | if (!qp) |
| 466 | return ERR_PTR(-ENOMEM); |
| 467 | |
| 468 | qp->real_qp = real_qp; |
| 469 | atomic_inc(&real_qp->usecnt); |
| 470 | qp->device = real_qp->device; |
| 471 | qp->event_handler = event_handler; |
| 472 | qp->qp_context = qp_context; |
| 473 | qp->qp_num = real_qp->qp_num; |
| 474 | qp->qp_type = real_qp->qp_type; |
| 475 | |
| 476 | spin_lock_irqsave(&real_qp->device->event_handler_lock, flags); |
| 477 | list_add(&qp->open_list, &real_qp->open_list); |
| 478 | spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags); |
| 479 | |
| 480 | return qp; |
| 481 | } |
| 482 | |
| 483 | struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd, |
| 484 | struct ib_qp_open_attr *qp_open_attr) |
| 485 | { |
| 486 | struct ib_qp *qp, *real_qp; |
| 487 | |
| 488 | if (qp_open_attr->qp_type != IB_QPT_XRC_TGT) |
| 489 | return ERR_PTR(-EINVAL); |
| 490 | |
| 491 | qp = ERR_PTR(-EINVAL); |
| 492 | mutex_lock(&xrcd->tgt_qp_mutex); |
| 493 | list_for_each_entry(real_qp, &xrcd->tgt_qp_list, xrcd_list) { |
| 494 | if (real_qp->qp_num == qp_open_attr->qp_num) { |
| 495 | qp = __ib_open_qp(real_qp, qp_open_attr->event_handler, |
| 496 | qp_open_attr->qp_context); |
| 497 | break; |
| 498 | } |
| 499 | } |
| 500 | mutex_unlock(&xrcd->tgt_qp_mutex); |
| 501 | return qp; |
| 502 | } |
| 503 | EXPORT_SYMBOL(ib_open_qp); |
| 504 | |
| 505 | struct ib_qp *ib_create_qp(struct ib_pd *pd, |
| 506 | struct ib_qp_init_attr *qp_init_attr) |
| 507 | { |
| 508 | struct ib_qp *qp, *real_qp; |
| 509 | struct ib_device *device; |
| 510 | |
| 511 | device = pd ? pd->device : qp_init_attr->xrcd->device; |
| 512 | qp = device->create_qp(pd, qp_init_attr, NULL); |
| 513 | |
| 514 | if (!IS_ERR(qp)) { |
| 515 | qp->device = device; |
| 516 | qp->real_qp = qp; |
| 517 | qp->uobject = NULL; |
| 518 | qp->qp_type = qp_init_attr->qp_type; |
| 519 | |
| 520 | atomic_set(&qp->usecnt, 0); |
| 521 | if (qp_init_attr->qp_type == IB_QPT_XRC_TGT) { |
| 522 | qp->event_handler = __ib_shared_qp_event_handler; |
| 523 | qp->qp_context = qp; |
| 524 | qp->pd = NULL; |
| 525 | qp->send_cq = qp->recv_cq = NULL; |
| 526 | qp->srq = NULL; |
| 527 | qp->xrcd = qp_init_attr->xrcd; |
| 528 | atomic_inc(&qp_init_attr->xrcd->usecnt); |
| 529 | INIT_LIST_HEAD(&qp->open_list); |
| 530 | |
| 531 | real_qp = qp; |
| 532 | qp = __ib_open_qp(real_qp, qp_init_attr->event_handler, |
| 533 | qp_init_attr->qp_context); |
| 534 | if (!IS_ERR(qp)) |
| 535 | __ib_insert_xrcd_qp(qp_init_attr->xrcd, real_qp); |
| 536 | else |
| 537 | real_qp->device->destroy_qp(real_qp); |
| 538 | } else { |
| 539 | qp->event_handler = qp_init_attr->event_handler; |
| 540 | qp->qp_context = qp_init_attr->qp_context; |
| 541 | if (qp_init_attr->qp_type == IB_QPT_XRC_INI) { |
| 542 | qp->recv_cq = NULL; |
| 543 | qp->srq = NULL; |
| 544 | } else { |
| 545 | qp->recv_cq = qp_init_attr->recv_cq; |
| 546 | atomic_inc(&qp_init_attr->recv_cq->usecnt); |
| 547 | qp->srq = qp_init_attr->srq; |
| 548 | if (qp->srq) |
| 549 | atomic_inc(&qp_init_attr->srq->usecnt); |
| 550 | } |
| 551 | |
| 552 | qp->pd = pd; |
| 553 | qp->send_cq = qp_init_attr->send_cq; |
| 554 | qp->xrcd = NULL; |
| 555 | |
| 556 | atomic_inc(&pd->usecnt); |
| 557 | atomic_inc(&qp_init_attr->send_cq->usecnt); |
| 558 | } |
| 559 | } |
| 560 | |
| 561 | return qp; |
| 562 | } |
| 563 | EXPORT_SYMBOL(ib_create_qp); |
| 564 | |
| 565 | static const struct { |
| 566 | int valid; |
| 567 | enum ib_qp_attr_mask req_param[IB_QPT_MAX]; |
| 568 | enum ib_qp_attr_mask req_param_add_eth[IB_QPT_MAX]; |
| 569 | enum ib_qp_attr_mask opt_param[IB_QPT_MAX]; |
| 570 | enum ib_qp_attr_mask opt_param_add_eth[IB_QPT_MAX]; |
| 571 | } qp_state_table[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = { |
| 572 | [IB_QPS_RESET] = { |
| 573 | [IB_QPS_RESET] = { .valid = 1 }, |
| 574 | [IB_QPS_INIT] = { |
| 575 | .valid = 1, |
| 576 | .req_param = { |
| 577 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | |
| 578 | IB_QP_PORT | |
| 579 | IB_QP_QKEY), |
| 580 | [IB_QPT_RAW_PACKET] = IB_QP_PORT, |
| 581 | [IB_QPT_UC] = (IB_QP_PKEY_INDEX | |
| 582 | IB_QP_PORT | |
| 583 | IB_QP_ACCESS_FLAGS), |
| 584 | [IB_QPT_RC] = (IB_QP_PKEY_INDEX | |
| 585 | IB_QP_PORT | |
| 586 | IB_QP_ACCESS_FLAGS), |
| 587 | [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX | |
| 588 | IB_QP_PORT | |
| 589 | IB_QP_ACCESS_FLAGS), |
| 590 | [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX | |
| 591 | IB_QP_PORT | |
| 592 | IB_QP_ACCESS_FLAGS), |
| 593 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | |
| 594 | IB_QP_QKEY), |
| 595 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | |
| 596 | IB_QP_QKEY), |
| 597 | } |
| 598 | }, |
| 599 | }, |
| 600 | [IB_QPS_INIT] = { |
| 601 | [IB_QPS_RESET] = { .valid = 1 }, |
| 602 | [IB_QPS_ERR] = { .valid = 1 }, |
| 603 | [IB_QPS_INIT] = { |
| 604 | .valid = 1, |
| 605 | .opt_param = { |
| 606 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | |
| 607 | IB_QP_PORT | |
| 608 | IB_QP_QKEY), |
| 609 | [IB_QPT_UC] = (IB_QP_PKEY_INDEX | |
| 610 | IB_QP_PORT | |
| 611 | IB_QP_ACCESS_FLAGS), |
| 612 | [IB_QPT_RC] = (IB_QP_PKEY_INDEX | |
| 613 | IB_QP_PORT | |
| 614 | IB_QP_ACCESS_FLAGS), |
| 615 | [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX | |
| 616 | IB_QP_PORT | |
| 617 | IB_QP_ACCESS_FLAGS), |
| 618 | [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX | |
| 619 | IB_QP_PORT | |
| 620 | IB_QP_ACCESS_FLAGS), |
| 621 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | |
| 622 | IB_QP_QKEY), |
| 623 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | |
| 624 | IB_QP_QKEY), |
| 625 | } |
| 626 | }, |
| 627 | [IB_QPS_RTR] = { |
| 628 | .valid = 1, |
| 629 | .req_param = { |
| 630 | [IB_QPT_UC] = (IB_QP_AV | |
| 631 | IB_QP_PATH_MTU | |
| 632 | IB_QP_DEST_QPN | |
| 633 | IB_QP_RQ_PSN), |
| 634 | [IB_QPT_RC] = (IB_QP_AV | |
| 635 | IB_QP_PATH_MTU | |
| 636 | IB_QP_DEST_QPN | |
| 637 | IB_QP_RQ_PSN | |
| 638 | IB_QP_MAX_DEST_RD_ATOMIC | |
| 639 | IB_QP_MIN_RNR_TIMER), |
| 640 | [IB_QPT_XRC_INI] = (IB_QP_AV | |
| 641 | IB_QP_PATH_MTU | |
| 642 | IB_QP_DEST_QPN | |
| 643 | IB_QP_RQ_PSN), |
| 644 | [IB_QPT_XRC_TGT] = (IB_QP_AV | |
| 645 | IB_QP_PATH_MTU | |
| 646 | IB_QP_DEST_QPN | |
| 647 | IB_QP_RQ_PSN | |
| 648 | IB_QP_MAX_DEST_RD_ATOMIC | |
| 649 | IB_QP_MIN_RNR_TIMER), |
| 650 | }, |
| 651 | .req_param_add_eth = { |
| 652 | [IB_QPT_RC] = (IB_QP_SMAC), |
| 653 | [IB_QPT_UC] = (IB_QP_SMAC), |
| 654 | [IB_QPT_XRC_INI] = (IB_QP_SMAC), |
| 655 | [IB_QPT_XRC_TGT] = (IB_QP_SMAC) |
| 656 | }, |
| 657 | .opt_param = { |
| 658 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | |
| 659 | IB_QP_QKEY), |
| 660 | [IB_QPT_UC] = (IB_QP_ALT_PATH | |
| 661 | IB_QP_ACCESS_FLAGS | |
| 662 | IB_QP_PKEY_INDEX), |
| 663 | [IB_QPT_RC] = (IB_QP_ALT_PATH | |
| 664 | IB_QP_ACCESS_FLAGS | |
| 665 | IB_QP_PKEY_INDEX), |
| 666 | [IB_QPT_XRC_INI] = (IB_QP_ALT_PATH | |
| 667 | IB_QP_ACCESS_FLAGS | |
| 668 | IB_QP_PKEY_INDEX), |
| 669 | [IB_QPT_XRC_TGT] = (IB_QP_ALT_PATH | |
| 670 | IB_QP_ACCESS_FLAGS | |
| 671 | IB_QP_PKEY_INDEX), |
| 672 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | |
| 673 | IB_QP_QKEY), |
| 674 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | |
| 675 | IB_QP_QKEY), |
| 676 | }, |
| 677 | .opt_param_add_eth = { |
| 678 | [IB_QPT_RC] = (IB_QP_ALT_SMAC | |
| 679 | IB_QP_VID | |
| 680 | IB_QP_ALT_VID), |
| 681 | [IB_QPT_UC] = (IB_QP_ALT_SMAC | |
| 682 | IB_QP_VID | |
| 683 | IB_QP_ALT_VID), |
| 684 | [IB_QPT_XRC_INI] = (IB_QP_ALT_SMAC | |
| 685 | IB_QP_VID | |
| 686 | IB_QP_ALT_VID), |
| 687 | [IB_QPT_XRC_TGT] = (IB_QP_ALT_SMAC | |
| 688 | IB_QP_VID | |
| 689 | IB_QP_ALT_VID) |
| 690 | } |
| 691 | } |
| 692 | }, |
| 693 | [IB_QPS_RTR] = { |
| 694 | [IB_QPS_RESET] = { .valid = 1 }, |
| 695 | [IB_QPS_ERR] = { .valid = 1 }, |
| 696 | [IB_QPS_RTS] = { |
| 697 | .valid = 1, |
| 698 | .req_param = { |
| 699 | [IB_QPT_UD] = IB_QP_SQ_PSN, |
| 700 | [IB_QPT_UC] = IB_QP_SQ_PSN, |
| 701 | [IB_QPT_RC] = (IB_QP_TIMEOUT | |
| 702 | IB_QP_RETRY_CNT | |
| 703 | IB_QP_RNR_RETRY | |
| 704 | IB_QP_SQ_PSN | |
| 705 | IB_QP_MAX_QP_RD_ATOMIC), |
| 706 | [IB_QPT_XRC_INI] = (IB_QP_TIMEOUT | |
| 707 | IB_QP_RETRY_CNT | |
| 708 | IB_QP_RNR_RETRY | |
| 709 | IB_QP_SQ_PSN | |
| 710 | IB_QP_MAX_QP_RD_ATOMIC), |
| 711 | [IB_QPT_XRC_TGT] = (IB_QP_TIMEOUT | |
| 712 | IB_QP_SQ_PSN), |
| 713 | [IB_QPT_SMI] = IB_QP_SQ_PSN, |
| 714 | [IB_QPT_GSI] = IB_QP_SQ_PSN, |
| 715 | }, |
| 716 | .opt_param = { |
| 717 | [IB_QPT_UD] = (IB_QP_CUR_STATE | |
| 718 | IB_QP_QKEY), |
| 719 | [IB_QPT_UC] = (IB_QP_CUR_STATE | |
| 720 | IB_QP_ALT_PATH | |
| 721 | IB_QP_ACCESS_FLAGS | |
| 722 | IB_QP_PATH_MIG_STATE), |
| 723 | [IB_QPT_RC] = (IB_QP_CUR_STATE | |
| 724 | IB_QP_ALT_PATH | |
| 725 | IB_QP_ACCESS_FLAGS | |
| 726 | IB_QP_MIN_RNR_TIMER | |
| 727 | IB_QP_PATH_MIG_STATE), |
| 728 | [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | |
| 729 | IB_QP_ALT_PATH | |
| 730 | IB_QP_ACCESS_FLAGS | |
| 731 | IB_QP_PATH_MIG_STATE), |
| 732 | [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | |
| 733 | IB_QP_ALT_PATH | |
| 734 | IB_QP_ACCESS_FLAGS | |
| 735 | IB_QP_MIN_RNR_TIMER | |
| 736 | IB_QP_PATH_MIG_STATE), |
| 737 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | |
| 738 | IB_QP_QKEY), |
| 739 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | |
| 740 | IB_QP_QKEY), |
| 741 | } |
| 742 | } |
| 743 | }, |
| 744 | [IB_QPS_RTS] = { |
| 745 | [IB_QPS_RESET] = { .valid = 1 }, |
| 746 | [IB_QPS_ERR] = { .valid = 1 }, |
| 747 | [IB_QPS_RTS] = { |
| 748 | .valid = 1, |
| 749 | .opt_param = { |
| 750 | [IB_QPT_UD] = (IB_QP_CUR_STATE | |
| 751 | IB_QP_QKEY), |
| 752 | [IB_QPT_UC] = (IB_QP_CUR_STATE | |
| 753 | IB_QP_ACCESS_FLAGS | |
| 754 | IB_QP_ALT_PATH | |
| 755 | IB_QP_PATH_MIG_STATE), |
| 756 | [IB_QPT_RC] = (IB_QP_CUR_STATE | |
| 757 | IB_QP_ACCESS_FLAGS | |
| 758 | IB_QP_ALT_PATH | |
| 759 | IB_QP_PATH_MIG_STATE | |
| 760 | IB_QP_MIN_RNR_TIMER), |
| 761 | [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | |
| 762 | IB_QP_ACCESS_FLAGS | |
| 763 | IB_QP_ALT_PATH | |
| 764 | IB_QP_PATH_MIG_STATE), |
| 765 | [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | |
| 766 | IB_QP_ACCESS_FLAGS | |
| 767 | IB_QP_ALT_PATH | |
| 768 | IB_QP_PATH_MIG_STATE | |
| 769 | IB_QP_MIN_RNR_TIMER), |
| 770 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | |
| 771 | IB_QP_QKEY), |
| 772 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | |
| 773 | IB_QP_QKEY), |
| 774 | } |
| 775 | }, |
| 776 | [IB_QPS_SQD] = { |
| 777 | .valid = 1, |
| 778 | .opt_param = { |
| 779 | [IB_QPT_UD] = IB_QP_EN_SQD_ASYNC_NOTIFY, |
| 780 | [IB_QPT_UC] = IB_QP_EN_SQD_ASYNC_NOTIFY, |
| 781 | [IB_QPT_RC] = IB_QP_EN_SQD_ASYNC_NOTIFY, |
| 782 | [IB_QPT_XRC_INI] = IB_QP_EN_SQD_ASYNC_NOTIFY, |
| 783 | [IB_QPT_XRC_TGT] = IB_QP_EN_SQD_ASYNC_NOTIFY, /* ??? */ |
| 784 | [IB_QPT_SMI] = IB_QP_EN_SQD_ASYNC_NOTIFY, |
| 785 | [IB_QPT_GSI] = IB_QP_EN_SQD_ASYNC_NOTIFY |
| 786 | } |
| 787 | }, |
| 788 | }, |
| 789 | [IB_QPS_SQD] = { |
| 790 | [IB_QPS_RESET] = { .valid = 1 }, |
| 791 | [IB_QPS_ERR] = { .valid = 1 }, |
| 792 | [IB_QPS_RTS] = { |
| 793 | .valid = 1, |
| 794 | .opt_param = { |
| 795 | [IB_QPT_UD] = (IB_QP_CUR_STATE | |
| 796 | IB_QP_QKEY), |
| 797 | [IB_QPT_UC] = (IB_QP_CUR_STATE | |
| 798 | IB_QP_ALT_PATH | |
| 799 | IB_QP_ACCESS_FLAGS | |
| 800 | IB_QP_PATH_MIG_STATE), |
| 801 | [IB_QPT_RC] = (IB_QP_CUR_STATE | |
| 802 | IB_QP_ALT_PATH | |
| 803 | IB_QP_ACCESS_FLAGS | |
| 804 | IB_QP_MIN_RNR_TIMER | |
| 805 | IB_QP_PATH_MIG_STATE), |
| 806 | [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | |
| 807 | IB_QP_ALT_PATH | |
| 808 | IB_QP_ACCESS_FLAGS | |
| 809 | IB_QP_PATH_MIG_STATE), |
| 810 | [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | |
| 811 | IB_QP_ALT_PATH | |
| 812 | IB_QP_ACCESS_FLAGS | |
| 813 | IB_QP_MIN_RNR_TIMER | |
| 814 | IB_QP_PATH_MIG_STATE), |
| 815 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | |
| 816 | IB_QP_QKEY), |
| 817 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | |
| 818 | IB_QP_QKEY), |
| 819 | } |
| 820 | }, |
| 821 | [IB_QPS_SQD] = { |
| 822 | .valid = 1, |
| 823 | .opt_param = { |
| 824 | [IB_QPT_UD] = (IB_QP_PKEY_INDEX | |
| 825 | IB_QP_QKEY), |
| 826 | [IB_QPT_UC] = (IB_QP_AV | |
| 827 | IB_QP_ALT_PATH | |
| 828 | IB_QP_ACCESS_FLAGS | |
| 829 | IB_QP_PKEY_INDEX | |
| 830 | IB_QP_PATH_MIG_STATE), |
| 831 | [IB_QPT_RC] = (IB_QP_PORT | |
| 832 | IB_QP_AV | |
| 833 | IB_QP_TIMEOUT | |
| 834 | IB_QP_RETRY_CNT | |
| 835 | IB_QP_RNR_RETRY | |
| 836 | IB_QP_MAX_QP_RD_ATOMIC | |
| 837 | IB_QP_MAX_DEST_RD_ATOMIC | |
| 838 | IB_QP_ALT_PATH | |
| 839 | IB_QP_ACCESS_FLAGS | |
| 840 | IB_QP_PKEY_INDEX | |
| 841 | IB_QP_MIN_RNR_TIMER | |
| 842 | IB_QP_PATH_MIG_STATE), |
| 843 | [IB_QPT_XRC_INI] = (IB_QP_PORT | |
| 844 | IB_QP_AV | |
| 845 | IB_QP_TIMEOUT | |
| 846 | IB_QP_RETRY_CNT | |
| 847 | IB_QP_RNR_RETRY | |
| 848 | IB_QP_MAX_QP_RD_ATOMIC | |
| 849 | IB_QP_ALT_PATH | |
| 850 | IB_QP_ACCESS_FLAGS | |
| 851 | IB_QP_PKEY_INDEX | |
| 852 | IB_QP_PATH_MIG_STATE), |
| 853 | [IB_QPT_XRC_TGT] = (IB_QP_PORT | |
| 854 | IB_QP_AV | |
| 855 | IB_QP_TIMEOUT | |
| 856 | IB_QP_MAX_DEST_RD_ATOMIC | |
| 857 | IB_QP_ALT_PATH | |
| 858 | IB_QP_ACCESS_FLAGS | |
| 859 | IB_QP_PKEY_INDEX | |
| 860 | IB_QP_MIN_RNR_TIMER | |
| 861 | IB_QP_PATH_MIG_STATE), |
| 862 | [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | |
| 863 | IB_QP_QKEY), |
| 864 | [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | |
| 865 | IB_QP_QKEY), |
| 866 | } |
| 867 | } |
| 868 | }, |
| 869 | [IB_QPS_SQE] = { |
| 870 | [IB_QPS_RESET] = { .valid = 1 }, |
| 871 | [IB_QPS_ERR] = { .valid = 1 }, |
| 872 | [IB_QPS_RTS] = { |
| 873 | .valid = 1, |
| 874 | .opt_param = { |
| 875 | [IB_QPT_UD] = (IB_QP_CUR_STATE | |
| 876 | IB_QP_QKEY), |
| 877 | [IB_QPT_UC] = (IB_QP_CUR_STATE | |
| 878 | IB_QP_ACCESS_FLAGS), |
| 879 | [IB_QPT_SMI] = (IB_QP_CUR_STATE | |
| 880 | IB_QP_QKEY), |
| 881 | [IB_QPT_GSI] = (IB_QP_CUR_STATE | |
| 882 | IB_QP_QKEY), |
| 883 | } |
| 884 | } |
| 885 | }, |
| 886 | [IB_QPS_ERR] = { |
| 887 | [IB_QPS_RESET] = { .valid = 1 }, |
| 888 | [IB_QPS_ERR] = { .valid = 1 } |
| 889 | } |
| 890 | }; |
| 891 | |
| 892 | int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state, |
| 893 | enum ib_qp_type type, enum ib_qp_attr_mask mask, |
| 894 | enum rdma_link_layer ll) |
| 895 | { |
| 896 | enum ib_qp_attr_mask req_param, opt_param; |
| 897 | |
| 898 | if (cur_state < 0 || cur_state > IB_QPS_ERR || |
| 899 | next_state < 0 || next_state > IB_QPS_ERR) |
| 900 | return 0; |
| 901 | |
| 902 | if (mask & IB_QP_CUR_STATE && |
| 903 | cur_state != IB_QPS_RTR && cur_state != IB_QPS_RTS && |
| 904 | cur_state != IB_QPS_SQD && cur_state != IB_QPS_SQE) |
| 905 | return 0; |
| 906 | |
| 907 | if (!qp_state_table[cur_state][next_state].valid) |
| 908 | return 0; |
| 909 | |
| 910 | req_param = qp_state_table[cur_state][next_state].req_param[type]; |
| 911 | opt_param = qp_state_table[cur_state][next_state].opt_param[type]; |
| 912 | |
| 913 | if (ll == IB_LINK_LAYER_ETHERNET) { |
| 914 | req_param |= qp_state_table[cur_state][next_state]. |
| 915 | req_param_add_eth[type]; |
| 916 | opt_param |= qp_state_table[cur_state][next_state]. |
| 917 | opt_param_add_eth[type]; |
| 918 | } |
| 919 | |
| 920 | if ((mask & req_param) != req_param) |
| 921 | return 0; |
| 922 | |
| 923 | if (mask & ~(req_param | opt_param | IB_QP_STATE)) |
| 924 | return 0; |
| 925 | |
| 926 | return 1; |
| 927 | } |
| 928 | EXPORT_SYMBOL(ib_modify_qp_is_ok); |
| 929 | |
| 930 | int ib_resolve_eth_l2_attrs(struct ib_qp *qp, |
| 931 | struct ib_qp_attr *qp_attr, int *qp_attr_mask) |
| 932 | { |
| 933 | int ret = 0; |
| 934 | union ib_gid sgid; |
| 935 | |
| 936 | if ((*qp_attr_mask & IB_QP_AV) && |
| 937 | (rdma_cap_eth_ah(qp->device, qp_attr->ah_attr.port_num))) { |
| 938 | ret = ib_query_gid(qp->device, qp_attr->ah_attr.port_num, |
| 939 | qp_attr->ah_attr.grh.sgid_index, &sgid); |
| 940 | if (ret) |
| 941 | goto out; |
| 942 | if (rdma_link_local_addr((struct in6_addr *)qp_attr->ah_attr.grh.dgid.raw)) { |
| 943 | rdma_get_ll_mac((struct in6_addr *)qp_attr->ah_attr.grh.dgid.raw, qp_attr->ah_attr.dmac); |
| 944 | rdma_get_ll_mac((struct in6_addr *)sgid.raw, qp_attr->smac); |
| 945 | if (!(*qp_attr_mask & IB_QP_VID)) |
| 946 | qp_attr->vlan_id = rdma_get_vlan_id(&sgid); |
| 947 | } else { |
| 948 | ret = rdma_addr_find_dmac_by_grh(&sgid, &qp_attr->ah_attr.grh.dgid, |
| 949 | qp_attr->ah_attr.dmac, &qp_attr->vlan_id); |
| 950 | if (ret) |
| 951 | goto out; |
| 952 | ret = rdma_addr_find_smac_by_sgid(&sgid, qp_attr->smac, NULL); |
| 953 | if (ret) |
| 954 | goto out; |
| 955 | } |
| 956 | *qp_attr_mask |= IB_QP_SMAC; |
| 957 | if (qp_attr->vlan_id < 0xFFFF) |
| 958 | *qp_attr_mask |= IB_QP_VID; |
| 959 | } |
| 960 | out: |
| 961 | return ret; |
| 962 | } |
| 963 | EXPORT_SYMBOL(ib_resolve_eth_l2_attrs); |
| 964 | |
| 965 | |
| 966 | int ib_modify_qp(struct ib_qp *qp, |
| 967 | struct ib_qp_attr *qp_attr, |
| 968 | int qp_attr_mask) |
| 969 | { |
| 970 | int ret; |
| 971 | |
| 972 | ret = ib_resolve_eth_l2_attrs(qp, qp_attr, &qp_attr_mask); |
| 973 | if (ret) |
| 974 | return ret; |
| 975 | |
| 976 | return qp->device->modify_qp(qp->real_qp, qp_attr, qp_attr_mask, NULL); |
| 977 | } |
| 978 | EXPORT_SYMBOL(ib_modify_qp); |
| 979 | |
| 980 | int ib_query_qp(struct ib_qp *qp, |
| 981 | struct ib_qp_attr *qp_attr, |
| 982 | int qp_attr_mask, |
| 983 | struct ib_qp_init_attr *qp_init_attr) |
| 984 | { |
| 985 | return qp->device->query_qp ? |
| 986 | qp->device->query_qp(qp->real_qp, qp_attr, qp_attr_mask, qp_init_attr) : |
| 987 | -ENOSYS; |
| 988 | } |
| 989 | EXPORT_SYMBOL(ib_query_qp); |
| 990 | |
| 991 | int ib_close_qp(struct ib_qp *qp) |
| 992 | { |
| 993 | struct ib_qp *real_qp; |
| 994 | unsigned long flags; |
| 995 | |
| 996 | real_qp = qp->real_qp; |
| 997 | if (real_qp == qp) |
| 998 | return -EINVAL; |
| 999 | |
| 1000 | spin_lock_irqsave(&real_qp->device->event_handler_lock, flags); |
| 1001 | list_del(&qp->open_list); |
| 1002 | spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags); |
| 1003 | |
| 1004 | atomic_dec(&real_qp->usecnt); |
| 1005 | kfree(qp); |
| 1006 | |
| 1007 | return 0; |
| 1008 | } |
| 1009 | EXPORT_SYMBOL(ib_close_qp); |
| 1010 | |
| 1011 | static int __ib_destroy_shared_qp(struct ib_qp *qp) |
| 1012 | { |
| 1013 | struct ib_xrcd *xrcd; |
| 1014 | struct ib_qp *real_qp; |
| 1015 | int ret; |
| 1016 | |
| 1017 | real_qp = qp->real_qp; |
| 1018 | xrcd = real_qp->xrcd; |
| 1019 | |
| 1020 | mutex_lock(&xrcd->tgt_qp_mutex); |
| 1021 | ib_close_qp(qp); |
| 1022 | if (atomic_read(&real_qp->usecnt) == 0) |
| 1023 | list_del(&real_qp->xrcd_list); |
| 1024 | else |
| 1025 | real_qp = NULL; |
| 1026 | mutex_unlock(&xrcd->tgt_qp_mutex); |
| 1027 | |
| 1028 | if (real_qp) { |
| 1029 | ret = ib_destroy_qp(real_qp); |
| 1030 | if (!ret) |
| 1031 | atomic_dec(&xrcd->usecnt); |
| 1032 | else |
| 1033 | __ib_insert_xrcd_qp(xrcd, real_qp); |
| 1034 | } |
| 1035 | |
| 1036 | return 0; |
| 1037 | } |
| 1038 | |
| 1039 | int ib_destroy_qp(struct ib_qp *qp) |
| 1040 | { |
| 1041 | struct ib_pd *pd; |
| 1042 | struct ib_cq *scq, *rcq; |
| 1043 | struct ib_srq *srq; |
| 1044 | int ret; |
| 1045 | |
| 1046 | if (atomic_read(&qp->usecnt)) |
| 1047 | return -EBUSY; |
| 1048 | |
| 1049 | if (qp->real_qp != qp) |
| 1050 | return __ib_destroy_shared_qp(qp); |
| 1051 | |
| 1052 | pd = qp->pd; |
| 1053 | scq = qp->send_cq; |
| 1054 | rcq = qp->recv_cq; |
| 1055 | srq = qp->srq; |
| 1056 | |
| 1057 | ret = qp->device->destroy_qp(qp); |
| 1058 | if (!ret) { |
| 1059 | if (pd) |
| 1060 | atomic_dec(&pd->usecnt); |
| 1061 | if (scq) |
| 1062 | atomic_dec(&scq->usecnt); |
| 1063 | if (rcq) |
| 1064 | atomic_dec(&rcq->usecnt); |
| 1065 | if (srq) |
| 1066 | atomic_dec(&srq->usecnt); |
| 1067 | } |
| 1068 | |
| 1069 | return ret; |
| 1070 | } |
| 1071 | EXPORT_SYMBOL(ib_destroy_qp); |
| 1072 | |
| 1073 | /* Completion queues */ |
| 1074 | |
| 1075 | struct ib_cq *ib_create_cq(struct ib_device *device, |
| 1076 | ib_comp_handler comp_handler, |
| 1077 | void (*event_handler)(struct ib_event *, void *), |
| 1078 | void *cq_context, int cqe, int comp_vector) |
| 1079 | { |
| 1080 | struct ib_cq *cq; |
| 1081 | |
| 1082 | cq = device->create_cq(device, cqe, comp_vector, NULL, NULL); |
| 1083 | |
| 1084 | if (!IS_ERR(cq)) { |
| 1085 | cq->device = device; |
| 1086 | cq->uobject = NULL; |
| 1087 | cq->comp_handler = comp_handler; |
| 1088 | cq->event_handler = event_handler; |
| 1089 | cq->cq_context = cq_context; |
| 1090 | atomic_set(&cq->usecnt, 0); |
| 1091 | } |
| 1092 | |
| 1093 | return cq; |
| 1094 | } |
| 1095 | EXPORT_SYMBOL(ib_create_cq); |
| 1096 | |
| 1097 | int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period) |
| 1098 | { |
| 1099 | return cq->device->modify_cq ? |
| 1100 | cq->device->modify_cq(cq, cq_count, cq_period) : -ENOSYS; |
| 1101 | } |
| 1102 | EXPORT_SYMBOL(ib_modify_cq); |
| 1103 | |
| 1104 | int ib_destroy_cq(struct ib_cq *cq) |
| 1105 | { |
| 1106 | if (atomic_read(&cq->usecnt)) |
| 1107 | return -EBUSY; |
| 1108 | |
| 1109 | return cq->device->destroy_cq(cq); |
| 1110 | } |
| 1111 | EXPORT_SYMBOL(ib_destroy_cq); |
| 1112 | |
| 1113 | int ib_resize_cq(struct ib_cq *cq, int cqe) |
| 1114 | { |
| 1115 | return cq->device->resize_cq ? |
| 1116 | cq->device->resize_cq(cq, cqe, NULL) : -ENOSYS; |
| 1117 | } |
| 1118 | EXPORT_SYMBOL(ib_resize_cq); |
| 1119 | |
| 1120 | /* Memory regions */ |
| 1121 | |
| 1122 | struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags) |
| 1123 | { |
| 1124 | struct ib_mr *mr; |
| 1125 | int err; |
| 1126 | |
| 1127 | err = ib_check_mr_access(mr_access_flags); |
| 1128 | if (err) |
| 1129 | return ERR_PTR(err); |
| 1130 | |
| 1131 | mr = pd->device->get_dma_mr(pd, mr_access_flags); |
| 1132 | |
| 1133 | if (!IS_ERR(mr)) { |
| 1134 | mr->device = pd->device; |
| 1135 | mr->pd = pd; |
| 1136 | mr->uobject = NULL; |
| 1137 | atomic_inc(&pd->usecnt); |
| 1138 | atomic_set(&mr->usecnt, 0); |
| 1139 | } |
| 1140 | |
| 1141 | return mr; |
| 1142 | } |
| 1143 | EXPORT_SYMBOL(ib_get_dma_mr); |
| 1144 | |
| 1145 | struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd, |
| 1146 | struct ib_phys_buf *phys_buf_array, |
| 1147 | int num_phys_buf, |
| 1148 | int mr_access_flags, |
| 1149 | u64 *iova_start) |
| 1150 | { |
| 1151 | struct ib_mr *mr; |
| 1152 | int err; |
| 1153 | |
| 1154 | err = ib_check_mr_access(mr_access_flags); |
| 1155 | if (err) |
| 1156 | return ERR_PTR(err); |
| 1157 | |
| 1158 | if (!pd->device->reg_phys_mr) |
| 1159 | return ERR_PTR(-ENOSYS); |
| 1160 | |
| 1161 | mr = pd->device->reg_phys_mr(pd, phys_buf_array, num_phys_buf, |
| 1162 | mr_access_flags, iova_start); |
| 1163 | |
| 1164 | if (!IS_ERR(mr)) { |
| 1165 | mr->device = pd->device; |
| 1166 | mr->pd = pd; |
| 1167 | mr->uobject = NULL; |
| 1168 | atomic_inc(&pd->usecnt); |
| 1169 | atomic_set(&mr->usecnt, 0); |
| 1170 | } |
| 1171 | |
| 1172 | return mr; |
| 1173 | } |
| 1174 | EXPORT_SYMBOL(ib_reg_phys_mr); |
| 1175 | |
| 1176 | int ib_rereg_phys_mr(struct ib_mr *mr, |
| 1177 | int mr_rereg_mask, |
| 1178 | struct ib_pd *pd, |
| 1179 | struct ib_phys_buf *phys_buf_array, |
| 1180 | int num_phys_buf, |
| 1181 | int mr_access_flags, |
| 1182 | u64 *iova_start) |
| 1183 | { |
| 1184 | struct ib_pd *old_pd; |
| 1185 | int ret; |
| 1186 | |
| 1187 | ret = ib_check_mr_access(mr_access_flags); |
| 1188 | if (ret) |
| 1189 | return ret; |
| 1190 | |
| 1191 | if (!mr->device->rereg_phys_mr) |
| 1192 | return -ENOSYS; |
| 1193 | |
| 1194 | if (atomic_read(&mr->usecnt)) |
| 1195 | return -EBUSY; |
| 1196 | |
| 1197 | old_pd = mr->pd; |
| 1198 | |
| 1199 | ret = mr->device->rereg_phys_mr(mr, mr_rereg_mask, pd, |
| 1200 | phys_buf_array, num_phys_buf, |
| 1201 | mr_access_flags, iova_start); |
| 1202 | |
| 1203 | if (!ret && (mr_rereg_mask & IB_MR_REREG_PD)) { |
| 1204 | atomic_dec(&old_pd->usecnt); |
| 1205 | atomic_inc(&pd->usecnt); |
| 1206 | } |
| 1207 | |
| 1208 | return ret; |
| 1209 | } |
| 1210 | EXPORT_SYMBOL(ib_rereg_phys_mr); |
| 1211 | |
| 1212 | int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr) |
| 1213 | { |
| 1214 | return mr->device->query_mr ? |
| 1215 | mr->device->query_mr(mr, mr_attr) : -ENOSYS; |
| 1216 | } |
| 1217 | EXPORT_SYMBOL(ib_query_mr); |
| 1218 | |
| 1219 | int ib_dereg_mr(struct ib_mr *mr) |
| 1220 | { |
| 1221 | struct ib_pd *pd; |
| 1222 | int ret; |
| 1223 | |
| 1224 | if (atomic_read(&mr->usecnt)) |
| 1225 | return -EBUSY; |
| 1226 | |
| 1227 | pd = mr->pd; |
| 1228 | ret = mr->device->dereg_mr(mr); |
| 1229 | if (!ret) |
| 1230 | atomic_dec(&pd->usecnt); |
| 1231 | |
| 1232 | return ret; |
| 1233 | } |
| 1234 | EXPORT_SYMBOL(ib_dereg_mr); |
| 1235 | |
| 1236 | struct ib_mr *ib_create_mr(struct ib_pd *pd, |
| 1237 | struct ib_mr_init_attr *mr_init_attr) |
| 1238 | { |
| 1239 | struct ib_mr *mr; |
| 1240 | |
| 1241 | if (!pd->device->create_mr) |
| 1242 | return ERR_PTR(-ENOSYS); |
| 1243 | |
| 1244 | mr = pd->device->create_mr(pd, mr_init_attr); |
| 1245 | |
| 1246 | if (!IS_ERR(mr)) { |
| 1247 | mr->device = pd->device; |
| 1248 | mr->pd = pd; |
| 1249 | mr->uobject = NULL; |
| 1250 | atomic_inc(&pd->usecnt); |
| 1251 | atomic_set(&mr->usecnt, 0); |
| 1252 | } |
| 1253 | |
| 1254 | return mr; |
| 1255 | } |
| 1256 | EXPORT_SYMBOL(ib_create_mr); |
| 1257 | |
| 1258 | int ib_destroy_mr(struct ib_mr *mr) |
| 1259 | { |
| 1260 | struct ib_pd *pd; |
| 1261 | int ret; |
| 1262 | |
| 1263 | if (atomic_read(&mr->usecnt)) |
| 1264 | return -EBUSY; |
| 1265 | |
| 1266 | pd = mr->pd; |
| 1267 | ret = mr->device->destroy_mr(mr); |
| 1268 | if (!ret) |
| 1269 | atomic_dec(&pd->usecnt); |
| 1270 | |
| 1271 | return ret; |
| 1272 | } |
| 1273 | EXPORT_SYMBOL(ib_destroy_mr); |
| 1274 | |
| 1275 | struct ib_mr *ib_alloc_fast_reg_mr(struct ib_pd *pd, int max_page_list_len) |
| 1276 | { |
| 1277 | struct ib_mr *mr; |
| 1278 | |
| 1279 | if (!pd->device->alloc_fast_reg_mr) |
| 1280 | return ERR_PTR(-ENOSYS); |
| 1281 | |
| 1282 | mr = pd->device->alloc_fast_reg_mr(pd, max_page_list_len); |
| 1283 | |
| 1284 | if (!IS_ERR(mr)) { |
| 1285 | mr->device = pd->device; |
| 1286 | mr->pd = pd; |
| 1287 | mr->uobject = NULL; |
| 1288 | atomic_inc(&pd->usecnt); |
| 1289 | atomic_set(&mr->usecnt, 0); |
| 1290 | } |
| 1291 | |
| 1292 | return mr; |
| 1293 | } |
| 1294 | EXPORT_SYMBOL(ib_alloc_fast_reg_mr); |
| 1295 | |
| 1296 | struct ib_fast_reg_page_list *ib_alloc_fast_reg_page_list(struct ib_device *device, |
| 1297 | int max_page_list_len) |
| 1298 | { |
| 1299 | struct ib_fast_reg_page_list *page_list; |
| 1300 | |
| 1301 | if (!device->alloc_fast_reg_page_list) |
| 1302 | return ERR_PTR(-ENOSYS); |
| 1303 | |
| 1304 | page_list = device->alloc_fast_reg_page_list(device, max_page_list_len); |
| 1305 | |
| 1306 | if (!IS_ERR(page_list)) { |
| 1307 | page_list->device = device; |
| 1308 | page_list->max_page_list_len = max_page_list_len; |
| 1309 | } |
| 1310 | |
| 1311 | return page_list; |
| 1312 | } |
| 1313 | EXPORT_SYMBOL(ib_alloc_fast_reg_page_list); |
| 1314 | |
| 1315 | void ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list) |
| 1316 | { |
| 1317 | page_list->device->free_fast_reg_page_list(page_list); |
| 1318 | } |
| 1319 | EXPORT_SYMBOL(ib_free_fast_reg_page_list); |
| 1320 | |
| 1321 | /* Memory windows */ |
| 1322 | |
| 1323 | struct ib_mw *ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type) |
| 1324 | { |
| 1325 | struct ib_mw *mw; |
| 1326 | |
| 1327 | if (!pd->device->alloc_mw) |
| 1328 | return ERR_PTR(-ENOSYS); |
| 1329 | |
| 1330 | mw = pd->device->alloc_mw(pd, type); |
| 1331 | if (!IS_ERR(mw)) { |
| 1332 | mw->device = pd->device; |
| 1333 | mw->pd = pd; |
| 1334 | mw->uobject = NULL; |
| 1335 | mw->type = type; |
| 1336 | atomic_inc(&pd->usecnt); |
| 1337 | } |
| 1338 | |
| 1339 | return mw; |
| 1340 | } |
| 1341 | EXPORT_SYMBOL(ib_alloc_mw); |
| 1342 | |
| 1343 | int ib_dealloc_mw(struct ib_mw *mw) |
| 1344 | { |
| 1345 | struct ib_pd *pd; |
| 1346 | int ret; |
| 1347 | |
| 1348 | pd = mw->pd; |
| 1349 | ret = mw->device->dealloc_mw(mw); |
| 1350 | if (!ret) |
| 1351 | atomic_dec(&pd->usecnt); |
| 1352 | |
| 1353 | return ret; |
| 1354 | } |
| 1355 | EXPORT_SYMBOL(ib_dealloc_mw); |
| 1356 | |
| 1357 | /* "Fast" memory regions */ |
| 1358 | |
| 1359 | struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd, |
| 1360 | int mr_access_flags, |
| 1361 | struct ib_fmr_attr *fmr_attr) |
| 1362 | { |
| 1363 | struct ib_fmr *fmr; |
| 1364 | |
| 1365 | if (!pd->device->alloc_fmr) |
| 1366 | return ERR_PTR(-ENOSYS); |
| 1367 | |
| 1368 | fmr = pd->device->alloc_fmr(pd, mr_access_flags, fmr_attr); |
| 1369 | if (!IS_ERR(fmr)) { |
| 1370 | fmr->device = pd->device; |
| 1371 | fmr->pd = pd; |
| 1372 | atomic_inc(&pd->usecnt); |
| 1373 | } |
| 1374 | |
| 1375 | return fmr; |
| 1376 | } |
| 1377 | EXPORT_SYMBOL(ib_alloc_fmr); |
| 1378 | |
| 1379 | int ib_unmap_fmr(struct list_head *fmr_list) |
| 1380 | { |
| 1381 | struct ib_fmr *fmr; |
| 1382 | |
| 1383 | if (list_empty(fmr_list)) |
| 1384 | return 0; |
| 1385 | |
| 1386 | fmr = list_entry(fmr_list->next, struct ib_fmr, list); |
| 1387 | return fmr->device->unmap_fmr(fmr_list); |
| 1388 | } |
| 1389 | EXPORT_SYMBOL(ib_unmap_fmr); |
| 1390 | |
| 1391 | int ib_dealloc_fmr(struct ib_fmr *fmr) |
| 1392 | { |
| 1393 | struct ib_pd *pd; |
| 1394 | int ret; |
| 1395 | |
| 1396 | pd = fmr->pd; |
| 1397 | ret = fmr->device->dealloc_fmr(fmr); |
| 1398 | if (!ret) |
| 1399 | atomic_dec(&pd->usecnt); |
| 1400 | |
| 1401 | return ret; |
| 1402 | } |
| 1403 | EXPORT_SYMBOL(ib_dealloc_fmr); |
| 1404 | |
| 1405 | /* Multicast groups */ |
| 1406 | |
| 1407 | int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) |
| 1408 | { |
| 1409 | int ret; |
| 1410 | |
| 1411 | if (!qp->device->attach_mcast) |
| 1412 | return -ENOSYS; |
| 1413 | if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD) |
| 1414 | return -EINVAL; |
| 1415 | |
| 1416 | ret = qp->device->attach_mcast(qp, gid, lid); |
| 1417 | if (!ret) |
| 1418 | atomic_inc(&qp->usecnt); |
| 1419 | return ret; |
| 1420 | } |
| 1421 | EXPORT_SYMBOL(ib_attach_mcast); |
| 1422 | |
| 1423 | int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) |
| 1424 | { |
| 1425 | int ret; |
| 1426 | |
| 1427 | if (!qp->device->detach_mcast) |
| 1428 | return -ENOSYS; |
| 1429 | if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD) |
| 1430 | return -EINVAL; |
| 1431 | |
| 1432 | ret = qp->device->detach_mcast(qp, gid, lid); |
| 1433 | if (!ret) |
| 1434 | atomic_dec(&qp->usecnt); |
| 1435 | return ret; |
| 1436 | } |
| 1437 | EXPORT_SYMBOL(ib_detach_mcast); |
| 1438 | |
| 1439 | struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device) |
| 1440 | { |
| 1441 | struct ib_xrcd *xrcd; |
| 1442 | |
| 1443 | if (!device->alloc_xrcd) |
| 1444 | return ERR_PTR(-ENOSYS); |
| 1445 | |
| 1446 | xrcd = device->alloc_xrcd(device, NULL, NULL); |
| 1447 | if (!IS_ERR(xrcd)) { |
| 1448 | xrcd->device = device; |
| 1449 | xrcd->inode = NULL; |
| 1450 | atomic_set(&xrcd->usecnt, 0); |
| 1451 | mutex_init(&xrcd->tgt_qp_mutex); |
| 1452 | INIT_LIST_HEAD(&xrcd->tgt_qp_list); |
| 1453 | } |
| 1454 | |
| 1455 | return xrcd; |
| 1456 | } |
| 1457 | EXPORT_SYMBOL(ib_alloc_xrcd); |
| 1458 | |
| 1459 | int ib_dealloc_xrcd(struct ib_xrcd *xrcd) |
| 1460 | { |
| 1461 | struct ib_qp *qp; |
| 1462 | int ret; |
| 1463 | |
| 1464 | if (atomic_read(&xrcd->usecnt)) |
| 1465 | return -EBUSY; |
| 1466 | |
| 1467 | while (!list_empty(&xrcd->tgt_qp_list)) { |
| 1468 | qp = list_entry(xrcd->tgt_qp_list.next, struct ib_qp, xrcd_list); |
| 1469 | ret = ib_destroy_qp(qp); |
| 1470 | if (ret) |
| 1471 | return ret; |
| 1472 | } |
| 1473 | |
| 1474 | return xrcd->device->dealloc_xrcd(xrcd); |
| 1475 | } |
| 1476 | EXPORT_SYMBOL(ib_dealloc_xrcd); |
| 1477 | |
| 1478 | struct ib_flow *ib_create_flow(struct ib_qp *qp, |
| 1479 | struct ib_flow_attr *flow_attr, |
| 1480 | int domain) |
| 1481 | { |
| 1482 | struct ib_flow *flow_id; |
| 1483 | if (!qp->device->create_flow) |
| 1484 | return ERR_PTR(-ENOSYS); |
| 1485 | |
| 1486 | flow_id = qp->device->create_flow(qp, flow_attr, domain); |
| 1487 | if (!IS_ERR(flow_id)) |
| 1488 | atomic_inc(&qp->usecnt); |
| 1489 | return flow_id; |
| 1490 | } |
| 1491 | EXPORT_SYMBOL(ib_create_flow); |
| 1492 | |
| 1493 | int ib_destroy_flow(struct ib_flow *flow_id) |
| 1494 | { |
| 1495 | int err; |
| 1496 | struct ib_qp *qp = flow_id->qp; |
| 1497 | |
| 1498 | err = qp->device->destroy_flow(flow_id); |
| 1499 | if (!err) |
| 1500 | atomic_dec(&qp->usecnt); |
| 1501 | return err; |
| 1502 | } |
| 1503 | EXPORT_SYMBOL(ib_destroy_flow); |
| 1504 | |
| 1505 | int ib_check_mr_status(struct ib_mr *mr, u32 check_mask, |
| 1506 | struct ib_mr_status *mr_status) |
| 1507 | { |
| 1508 | return mr->device->check_mr_status ? |
| 1509 | mr->device->check_mr_status(mr, check_mask, mr_status) : -ENOSYS; |
| 1510 | } |
| 1511 | EXPORT_SYMBOL(ib_check_mr_status); |